<!DOCTYPE html>
<html>
<head>
	<title>Bootstrap</title>
	<meta charset="utf-8">
	<meta  name="viewport" content="width=device-width,initial-scale=1">
	<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
	<script type="text/javascript" src="js/jquery-3.0.0.min.js"></script>
	<style type="text/css">
		body{
			padding-top: 50px;
		}
		.starter{
			padding: 40px 15px;
			text-align: center;
		}
	</style>
</head>
<body>
	<nav class="navbar navbar-inverse navbar-fixed-top" role="navigation">
		          <!-- navbar-default灰色 navbar-fixed-bottom变成底部栏 -->
		<div class="container">
			<div class="navbar-header">
				<a href="#" class="navbar-brand">Project Name</a>
			</div>
			<div id="navbar" class="collapse navbar-collapse">
				<ul class="nav navbar-nav">
					<!-- 鼠标移动颜色会发生变化 -->
					<li class="active"><a href="#">Home</a></li>
					<!-- active：在Home这里加了一个默认状态 -->
					<li><a href="#">About</a></li>
					<li><a href="#">Contact</a></li>
				</ul>
			</div>
		</div>
	</nav>

<div class="container">
	<!-- 此时内容被覆盖了 需要加body样式进行调整-->
	<!-- <h1>Bootstrap starter template</h1>
	<p class="lead">ASzdfghjkjtrewqasdfhjtrewrthyjkhASzdfghjkjtrewqasdfhjtrewrthyjkhASzdfghjkjtrewqasdfhjtrewrthyjkh</p> -->

	<div class="starter">
		<h1>Bootstrap starter template</h1>
		<p class="lead">ASzdfghjkjtrewqasdfhjtrewrthyjkhASzdfghjkjtrewqasdfhjtrewrthyjkhASzdfghjkjtrewqasdfhjtrewrthyjkh</p>
	</div>
</div>
</body>
</html>